Question

Which of the following is the area of the special trapezoid if AB = 10, CD = 10, and the height is 8.

a. 40 units
b. 80 units
c. 400 units
d. 800 units

Answer 1

Area of a trapezoid is A=height over 2 B1 +B2, so 10+10=20, then 20(8)=160, 160/2=80. Answer is b.

Answer 2

Explanation:

Alright, lets get started.

The given two sides are AB = 10

CD = 10

It means a is 10 and b is 10.

The height h is given as 8.

The formula of area of trapezoid =
`(1)/(2)(a+b)*h`

Plugging the values of a,b and h in the formula:

area =
`(1)/(2)(10+10)*8`

area =
`(1)/(2)*20*8`

area =
`10*8=80`

Hence the area is 80 units : Answer B

Hope it will help :)